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Zenith - El Primero 410

In 1969, after seven years of research, Zenith presented El Primero, the first ever integrated automatic chronograph. Beating at the impressive speed of 36,000 vibrations an hour, it delivered excellent performances.

That same year, Zenith pushed the limits even further by equipping the El Primero with triple calendar and moonphase indications. Initially identified as the El Primero 3019 PHF, this column-wheel chronograph movement was later referenced as 410.

Over the years the Calibre 410 has been used in several Zenith models thanks to undisputed reliability and great precision. In 2013, Zenith presented a 500-piece limited edition model named after this movement. It featured a slate grey dial with silver sub-dials.

Today Zenithunveils the El Primero 410 with a silver-toned dial which reproduces the original function layout: the days and months are counted off at 10 and 2 o'clock respectively, while the date is positioned between 4 and 5 o’clock. The snailed counters (small seconds at 9 o'clock, 30-minute at 3 o'clock, 12-hour at 6 o'clock) create a nice contrast with the sunray dial motif.

The moonphase indication is merged into the hour subdial at 6 o’clock. The disc bearing two moons is driven by a 59-toothed wheel corresponding to two lunar cycles (2 x 29.5 days).

After more than four decades from the creation of Calibre 410, Zenith is now presenting a complete model named after this model. The silver-toned sunray dial of the Zenith El Primero 410 reproduces the original function layout with the moonphase indication merged into the hour subdial at 6 o’clock. Zenith El Primero 410 Ref. 03.2091.410/01.C494